(a) 1947
(b) 1948
(c) 1949
(d) 1950- Purpose: To decide whether the district would remain part of the Indian province of Assam or join East Bengal in the newly created Dominion of Pakistan.
- Result: The majority voted in favor of joining Pakistan, leading to most of Sylhet becoming part of East Pakistan (now Bangladesh), while the Karimganj subdivision remained in India.